JP3015135B2 - Start-up ignition device for motorcycle engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starting ignition device for a motorcycle engine.

[0002]

2. Description of the Related Art The above-mentioned apparatus has been disclosed in, for example,
-195456. This conventional device prevents the motorcycle from suddenly starting when the engine's starting motor is driven and imposing an excessive burden on the engine. It is intended to prevent the side stand from being damaged by running or running.

[0003]

According to the above-mentioned conventional configuration, a start switch (corresponding to the reference numeral 25 in the above-mentioned publication) for starting the starting motor is described below. ), A clutch switch (31) for detecting the connection / disconnection state of the clutch in the transmission, and a side stand switch (38) for detecting the use and storage state of the side stand, and the like. (33), diodes (39, 40, 43), resistors (41, 42, 44, 4)
5) and the transistor (37), so that the conventional device has a problem that the configuration is complicated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a starting ignition device for a motorcycle engine which has the same function as a conventional device but has a simple structure. With the goal.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is characterized in that a start switch for driving a starting motor of an engine when closed, and for igniting the engine when closed. An engine stop switch, a clutch switch that closes when the clutch is disengaged in the transmission, and a side stand switch that closes when the side stand is not used are connected in series, and the ignition circuit is powered by the clutch switch and the side stand switch. A neutral switch that is closed when the transmission is in a neutral state, and a relay coil are connected in series, and a series circuit including a relay contact of the relay and a diode is connected in parallel with the side stand switch. At the point connected to

[0006]

[Operation] The operation of the above configuration is as follows. When driving the starting motor 11 to start the engine, the clutch is in the disconnected state, and the side stand is in the unused state or the transmission is in the neutral state. The starting motor 11 is driven by the closing operation of the start switch 9 to start the engine. According to this, at the time of starting, transmission of power from the engine to the rear wheels is prevented, and unexpected start of the motorcycle is prevented. Further, it is possible to prevent the motorcycle from starting while the side stand is in use.

On the other hand, when the engine is running, if the side stand is in an unused state and / or the transmission is in a neutral state, the driving of the engine is continued. In other words, when it is considered that the stand is in use and the transmission is running due to the non-neutral state, the spark discharge of the spark plug 18 is stopped and the engine is stopped. This prevents the side stand from being damaged.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit diagram of a starting ignition device for a motorcycle engine, which has a battery 1, a starting circuit 2, a flywheel magneto 3, and an ignition circuit 4.
The starting circuit 2 has a first relay 6, and a coil 7, a main switch 8, and a starting switch 9 of the first relay 6 are connected in series to the battery 1. Also,
A relay contact 10 of the first relay 6 and a starting motor 11 are connected in series to the battery 1 as described above. When the start switch 9 is closed and the coil 7 is excited with the main switch 8 closed, the relay contact 10 is closed and the starting motor 11 is driven. . Thus, cranking of the engine is performed. On the other hand, if the start switch 9 is opened due to inoperative operation, the coil 7 is demagnetized, the relay contact 10 is opened, and the driving of the start motor 11 is stopped.

The flywheel magneto 3 has a rotor 13 that rotates with the crankshaft of the engine. A charge coil 14 and a pulsar coil 15 are provided corresponding to the rotor 13. The ignition circuit 4 is of a capacitive discharge type, and has a capacitor 16, an ignition coil 17, a spark plug 18, and a thyristor 19,
The spark plug 18 faces the combustion chamber of the engine.
The charge coil 14 is connected to the condenser 1
6 and an ignition plug 18 through an ignition coil 17
Connected to the charge coil 14 and the condenser 1
6, the anode of the thyristor 19 is connected,
The gate of the thyristor 19 is connected to the pulsar coil 15.

When the rotor 13 rotates by the operation of the engine, a voltage is output from the charge coil 14,
This charges the capacitor 16. That is, the charge coil 14 serves as a power supply for the ignition circuit 4. In addition, a voltage is output from the pulsar coil 15 at a predetermined ignition timing with the rotation of the rotor 13, whereby the thyristor 19 is turned on and the capacitor 1 is turned on.
The electric charge stored in 6 is discharged. Then, this discharge causes the ignition plug 1 to pass through the ignition coil 17.
8, a spark discharge occurs, and the mixture is burned in the combustion chamber.

Reference numeral 21 is an engine stop switch, 22 is a clutch switch, 23 is a side stand switch,
These are connected in series with the start switch 9. The charge coil 14 is connected between the clutch switch 22 and the side stand switch 23 via a reversing circuit 25. In the above case, if the engine stop switch 21 is closed with the side stand switch 23 closed, the charge coil 14 is prevented from being grounded by the reversing circuit 25, and the above-described spark caused by the spark plug 18 is prevented. The operation is repeatedly performed, and the driving of the engine is continued. On the other hand, when the engine stop switch 21 is opened, the charge coil 14 is grounded by the reversing circuit 25 and the spark discharge by the spark plug 18 is stopped, that is, the driving of the engine is stopped.

A rear wheel for driving is connected to the engine via a gear type transmission, and the transmission is provided with a clutch. The clutch switch 22 is closed when the clutch is disengaged, and is opened when the clutch is engaged. In addition, a side stand that allows the body of the motorcycle to be self-supporting is provided. The side stand switch 23 is closed when the side stand is not used, and is opened when the side stand is used.

On the other hand, reference numeral 26 denotes a neutral switch. The neutral switch 26 is closed in conjunction with any of the transmission gears or the shift fork when the transmission is in a neutral state, and is closed when the transmission is in a non-neutral state. It is going to open. The neutral switch 26 and the coil 28 of the second relay 27 are connected in series to the battery 1 together with the start switch 9 and the like. Also, the second relay 27
Are connected in parallel to the side stand switch 23. In addition, reference numeral 31 denotes a lamp which is turned on when the neutral switch 26 is closed to indicate that the transmission is in a neutral state.

Next, the operation of the above embodiment will be described with reference to FIGS. To start the engine by driving the starter motor 11, first, the engine stop switch 21 is closed, and then the start switch 9 is closed. In this case, the starting motor 11 is driven according to at least one of the condition that the clutch switch 22 and the side stand switch 23 are both closed and the condition that the neutral switch 26 is closed. That is,
If the clutch is in the disengaged state and the side stand is in the unused state or the transmission is in the neutral state, the start motor 11 is driven by the closing operation of the start switch 9 and the engine Is started. According to this, at the time of starting, transmission of power from the engine to the rear wheels is prevented, and unexpected start of the motorcycle is prevented. Further, it is possible to prevent the motorcycle from starting while the side stand is in use.

On the other hand, when the engine is running, it is basically necessary for the engine stop switch 21 to be closed in order to continue driving the engine. Switch 26
By satisfying the condition that at least one of them is closed, the spark discharge by the spark plug 18 is repeated and the driving of the engine is continued. That is, if at least one of the side stand is in the unused state or the transmission is in the neutral state, the driving of the engine is continued. In other words, when it is considered that the stand is in use and the transmission is running due to the non-neutral state,
The spark discharge of the spark plug 18 is stopped, the engine is stopped, and damage to the side stand is prevented.

[0016]

According to the present invention, a start switch for enabling driving of an engine starting motor when closed, an engine stop switch for enabling ignition of the engine when closed, and closing by disengaging a clutch in the transmission. And a side stand switch that closes when the side stand is not used, and a power source for an ignition circuit is connected between the clutch switch and the side stand switch, while the transmission is in a neutral state. In this case, a neutral switch to be closed and a coil of a relay are connected in series, and a series circuit including a relay contact of the relay and a diode is connected in parallel to the side stand switch. It has the same function. According to the present invention, while having almost the same function as the conventional device, a relay or a diode is sufficient instead of the many electronic components required for the conventional device. The present invention has the advantage that the structure is extremely simple and the manufacturing cost can be reduced compared with the conventional apparatus.

[Brief description of the drawings]

FIG. 1 is an overall circuit diagram.

FIG. 2 is a theoretical circuit diagram of a main part.

[Explanation of symbols]

 Reference Signs List 4 ignition circuit 9 start switch 11 start motor 14 charge coil (power supply) 21 engine stop switch 22 clutch switch 23 side stand switch 26 neutral switch 27 second relay (relay) 28 coil 29 relay contact

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F02N 11/08 F02P 11/04 301 F02P 11/04 302

Claims (1)

(57) [Claims] 1. A start switch for enabling a start motor of an engine to be driven when closed, an engine stop switch for enabling an engine to be ignited when closed, a clutch switch to be closed when a clutch is disengaged in a transmission, A side stand switch that closes when the side stand is not used is connected in series, and a power source for an ignition circuit is connected between the clutch switch and the side stand switch, while a neutral switch that closes when the transmission is in a neutral state. A starting ignition device for a motorcycle engine, comprising a switch and a coil of a relay connected in series, and a series circuit including a relay contact of the relay and a diode connected in parallel to the side stand switch.